Y Combinator is an American venture investment organization. It is a seed accelerator and is the ground for various renowned online brands and IT companies. It has also been called as ‘the world’s most powerful start-up incubator’ by the Fast Company magazine.
Y Combinator, after being started by its four founders, held two programs from 2005 to 2008. The first program was held in Cambridge, Massachusetts and the other was held at Mountain View, in California. In January of 2009, Y Combinator closed the Cambridge program and decided to hold all future programs at the California site in Silicon Valley.